通化硕抠家具有限公司

    高級檢索

    CPE頂管機組熱軋HRSG用超長薄壁管的開發(fā)

    Development of HRSG-purposed Extra-long/Light-wall Steel Pipe as Hot-rolled with CPE Push Bench Mill

    • 摘要: 根據(jù)CPE頂管機組的特點，介紹了熱軋HRSG用超長薄壁管的生產工藝流程及技術控制難點，并從壁厚均勻性與拉凹缺陷控制、內表面質量、性能控制等方面提出具體的解決方案。實踐證明：通過優(yōu)化變形分配、頂管孔型，控制芯棒尺寸及其溫度，可有效減少拉斷事故的發(fā)生，并控制拉凹缺陷的產生，實現(xiàn)頂管軋制3.0～3.3 mm壁厚HRSG用薄壁管的穩(wěn)定生產；通過除鱗后、張力減徑前的中頻補熱及張力減徑后的冷卻速率控制，可穩(wěn)定地控制熱軋小直徑HRSG用超長薄壁管的性能。

       

      Abstract: Described on the basis of characteristics of the CPE push bench mill are the manufacturing process flow and the technical control-related difficulties for the hot-rolled HRSG-purposed extra-long/light-wall pipe. Also proposed here are the countermeasures against the problems concerning control of wall thickness homogeneity and drawing-caused concave defect，inner surface quality，and property control，etc. Relevant operation result shows that drawing-caused pipe breaking failure rate can be greatly reduced，and occurrence of drawing-caused concave defects can also be well prevented by means of optimizing deformation distribution，mill pass，and properly controlling of mandrel size and temperature so as to ensure consistent production of the 3.0~3.3 mm HRSG-purposed light-wall pipes. Moreover，the properties of the said small-sized pipe can also be consistently controlled by means of such techniques as the post-descaling/before stretch-reducing medium-frequency induction heat making-up，and control of the post-stretchreducing cooling velocity.

       

      • HTML全文

    /

    返回文章
    返回